Programming PHP 2/e == PHP5 only?

[walterbyrd]

I am trying to learn some codeignitor, which uses php4.

Programming PHP 2/e looks like a decent book, but I get the idea that
it focused on php5, and may not be very useful for PHP4.

Maybe I should see about buying an earlier edition of the book?

[petersprc]

CodeIgnitor can run on PHP5 afaict.

On Aug 1, 10:59 am, walterbyrd <[e-mail]:

I am trying to learn some codeignitor, which uses php4.

Programming PHP 2/e looks like a decent book, but I get the idea that
it focused on php5, and may not be very useful for PHP4.

Maybe I should see about buying an earlier edition of the book?